I show you how to use the Chicago Electric chainsaw sharpener and I also review the Chicago electric chainsaw sharpener from Harbor Freight. Its a good little sharpener and an easy way to keep your chains sharp and ready to go whenever you need to cut wood. Is is the best chainsaw sharpener on the face of the planet? Probably not but it is a very good grinder style eletric chainsaw sharpener and you don't have to take on the learning curve of filing a chainsaw with a hand file.